﻿<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>数据集Buffer查询</title>
</head>
<body style=" margin: 0;overflow: hidden;background: #fff;width: 100%;height:100%;position: absolute;top: 0;">
<div id="map" style="margin:0 auto;width: 100%;height: 100%"></div>
<script type="text/javascript" src="../../dist/include-leaflet.js"></script>
<script type="text/javascript">
    var host = window.isLocal ? document.location.protocol + "//" + document.location.host : "http://support.supermap.com.cn:8090";
    var map, resultLayer,
        baseUrl = host + "/iserver/services/map-world/rest/maps/World",
        url = host + "/iserver/services/data-world/rest/data";
    map = L.map('map', {
        preferCanvas: true,
        crs: L.CRS.EPSG4326,
        center: {lon: 0, lat: 0},
        maxZoom: 18,
        zoom: 2
    });
    L.supermap.tiledMapLayer(baseUrl).addTo(map);
    query();

    function query() {
        var polygon = L.polygon([[-20, 20], [0, 20], [0, 40], [-20, 40], [-20, 20]], {color: 'red'});
        var popup = L.popup().setContent('缓冲距离 = 10');
        polygon.addTo(map).bindPopup(popup).openPopup();
        var bufferParam = new SuperMap.GetFeaturesByBufferParameters({
            datasetNames: ["World:Capitals"],
            bufferDistance: 10,
            geometry: polygon
        });
        L.supermap
            .featureService(url)
            .getFeaturesByBuffer(bufferParam, function (serviceResult) {
                resultLayer = L.geoJSON(serviceResult.result.features, {
                    onEachFeature: function (feature, layer) {
                        layer.bindPopup("首都：" + feature.properties.CAPITAL);
                    }
                }).addTo(map);
            });
    }
</script>
</body>
</html>